TOPWAY

LCD Module User Manual

LM2088RFW-C

URL:

www.topwaydisplay.com

www.topwaysz.com

Document Name: LM2088RFW-C-Manual-Rev0.4

Page: 8 of 13

4.6

Control Data and Command

The LCD module setting is controlled by the internal Register Values.

The Register Address should be addressed when RS=1 and Register Value should be issued

when RS=0.

A full command sequence should be as follow.

Steps

/RD

/WR

RS

Data (DB0~ DB7)

1

st

1

0

1

Register Address

2

nd

1

0

0

Register Value

4.7

Register Table Summary

Reg.

Add

Reg.

Name

R/W

Descriptions

--

STATUS

R

MBUSY: Memory Write Busy Flag

1=Busy when write font or clear RAM; 0=not busy

SBUSY: Scan Busy Flag

1=Busy when driver scan logic is not idle; 0=not busy

SLEEP: Sleep state

1= In Sleep mode; 0=In Normal mode

WAKE_STS: Wakeup Status Bit

Same as REG[0FH] Bit2

KS_STS: Key Status Bit

Same as REG[0FH] Bit1

TP_STS: Tp Status Bit

Same as REG[0FH] Bit0

00h

WLCR

R/W

PWR : Power Mode

1=In Sleep Mode; 0=In Normal Mode

LINER: linear Decode Mode

1=User-defined ROM mapping rule; 0=GIG5/GB ROM mapping

rule

SR : Software Reset

1=reset all register (except DDRAM); 0=normal operation

CG : Display mode selection

1=Character Mode; 0=Graphic Mode

DP : Display on off control

1=normal display; 0=display off

BK : Full screen blinking control

1=blinking (blink time is set by REG 80H); 0=normal;

DV : Full screen inverse control

1=Inverse Full Screen; 0=Normal

01h

MISC

R/W

NO_FLICKER : Eliminating Flicker

1=enable, scan will auto-pending when busy; 0=disable

CKN : Clock Output in pin CLK_OUT

1=The pin indicates SLEEP state of STATUS REG;

0=The pin output internal system clock

BUSY_LEV : Busy Polarity(for “BUSY”pin)

1=Set Active High; 0=Set Active Low

INT_LEV: Interrupt Polarity (for “INT”pin)

1=Set Active High; 0=Set Active Low

XCK_SEL[1:0] : Driver Clock Selection

00=CLK/8; 01=CLK/4(Default); 10=CLK/2; 11=CLK

The CLK means system clock

SDIR:SEG Scan Direction

1=SEG order is 319~0; 0=SEG order is 0~319

CDIR: COM Scan Direction

1=COM order is 239~0; 0=COM order is 0~239

03h

ADSR

R/W

SCR_PEND : scroll Function Pending

1=Scroll function pending; 0=Scroll function keep active

BIT_INV : Set driver data output BIT Order

1=inverse order (BIT7 to BIT0, BIT6 to BIT1, and so on;

0=Normal order

SCR_DIR : Scroll Direction

When SCR_HV=1, 1= Bottom -> Top; 0= Top -> Bottom

When SCR_HV=0, 1=Right -> Left;

0=Left -> Right

SCR_HV : Scroll Horizontal/Vertical Selection

1= Common Scrolling(Vertical); 0= Segment Scrolling(Horizontal)

SCR_EN : Scroll Enable

1=Scroll function enable; 0=Scroll function disable